Picnic table



FIG. 1 is a front isometric view of a picnic table showing my new design;

FIG. 2 is a side elevational view thereof, the opposite side being identical thereof;

FIG. 3 is a front elevational view thereof, the back elevational view being identical thereto;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken lines showing a table top and bench seat tops are for environmental purposes only and form no part of the claimed design. 

The ornamental design for a picnic table, as shown and described. 